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Ispitivanje imunskog odgovora i prisustva vakcinalnog i terenskog soja virusa nodularnog dermatitisa kod goveda i novorođene teladi nakon vakcinacije atenuiranom vakcinom

Examination of immune response, and the presence of vaccine and field strain of nodular dermatitis virus in cattle and new borne calves after vaccination with attenuated vaccine

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2019
Disertacija.pdf (4.486Mb)
IzvestajKomisije21924.pdf (231.1Kb)
Author
Milovanović, Milovan
Mentor
Radojičić, Sonja
Committee members
Milićević, Vesna
Valčić, Miroslav
Nišavić, Jakov
Metadata
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Abstract
Nodularni dermatitis (ND) je akutno, subakutno ili hronično virusno oboljenje goveda i bivola. Prvi slučaj nodularnog dermatitisa u Srbiji je laboratorijski potvrđen 07.06.2016. godine. Najviše žarišta je bilo registrovano u Pčinjskom okrugu. Za sprečavanje širenja bolesti, celokupna populacija goveda je vakcinisana živom atenuiranom vakcinom od Neethling soja (OBP, Južnoafrička Republika). Cilj ove doktorske disertacije je ispitivanje aktivno i pasivno stečenog imunskog odgovora protiv virusa nodularnog dermatitisa kod goveda i novorođene teladi metodom virus neutralizacionog testa (VNT), tehnikom indirektne imunofluorescencije (IFAT) i komercijalnim ID Screen® Capripox double antigen Multi-species-ELISA testom proizvođača IDvet (Monpelje, Francuska). Pored seroloških ispitivanja, kod vakcinisanih životinja ispitivano je i prisustvo vakcinalnog i terenskog soja virusa metodom Real-Time PCR. Materijal za ispitivanje je sakupljen na teritoriji opštine Kraljevo u selu Vrdila, gde nije bi...lo prijavljenih slučajeva nodularnog dermatitisa. Uzorkovanje je sprovedeno tri puta u toku 2017. godine i to pre revakcinacije, mesec dana nakon revakcinacije i pet meseci nakon revakcinacije. Za ispitivanja aktivnog imunskog odgovora krvni serumi su sakupljeni od 79 životinja pre i mesec dana nakon revakcinacije i od 74 životinje pet meseci nakon revakcinacije. Za utvrđivanje specifičnosti ELISA testa ispitani su krvni serumi od 20 svinja seropozitivnih na Suipoxvirus. Pasivni imunski odgovor je ispitan pregledom krvnog seruma i kolostruma od 17 krava (na dan teljenja) i krvnog seruma od 20 teladi (0. i 14. dana starosti). Za ispitivanje karakteristika ELISA testa za ispitivanje mleka sakupljeno je pojedinačno i zbirno mleko od krava u laktaciji i to od 52 krave sa 12 gazdinstava pre revakcinacije, od 49 krava sa 11 gazdinstava mesec dana nakon revakcinacije i od 53 krave sa 15 gazdinstava pet meseci nakon revakcinacije. Kao negativna kontrola u cilju validacije ELISA testa ispitano je mleko od 352 krave sa teritorije Savezne Republike Nemačke. Za detekciju prisustva vakcinalnog i terenskog soja virusa prikupljena je krv sa EDTA od životinja odabranih za ispitivanje aktivnog i pasivnog imunskog odgovora, bris nosa i bris usta od životinja odabranih za ispitivanje aktivnog imunskog odgovora i hematofagni insekti sa 20 farmi odabranih za ispitivanje aktivnog imunskog odgovora (uzorkovani 4 puta tokom perioda ispitivanja)...

Nodular dermatitis (ND) is acute, subacute or chronic viral disease of cattle and buffalo. First laboratory confirmed ND outbreak in Serbia occurred on 07 June 2016. The most of the outbreaks registered was in Pčinjski district. In response to prevent spreading of the disease, vaccination of all cattle population was applied using of live attenuated Neethling vaccine (OBP, South Africa). Goal of this doctoral dissertation was investigation of active and passive acquired immunity against ND in cattle and new-born calves using of virus neutralization test (VNT), indirect fluorescence antibody test (IFAT) and commercially available ID Screen® Capripox double antigen Multi-species-ELISA test from IDvet (Montpelier, France). Next to serological investigation, presence of vaccine and field nodular dermatitis virus (NDV) strain was investigated using of Real- Time PCR method. Material for this study was collected in Vrdila village, Kraljevo municipality area with no previous reported ND outbr...eaks. Sampling was performed three times in 2017, before revaccination, one month post re-vaccination and five months post re-vaccination. For serological investigation of active acquired immunity blood serum samples were collected out of 79 cattle before and one month post re-vaccination and out of 74 cattle five months post re-vaccination. Blood serum samples from 20 swine seropositive to Suipoxvirus were used for investigation of ELISA specificity. Passive acquired immunity was investigated from blood serum and colostrums samples out of 17 cows (on day of calving) and from blood serum samples out of 20 new-born calves (0 and 14 days old). For investigation of characteristics of ELISA test for milk samples, individual and bulk milk samples were collected from cows which were in lactation, out of 52 cows and 12 farms before re-vaccination, 49 cows and 11 farms one month after re-vaccination and out of 53 cows and 15 farms five months post re-vaccination. As for negative control with the aim of ELISA test validation, milk samples out of 352 cows from Germany were investigated. For investigation of presence of vaccine and field NDV EDTA blood from animals which were selected for investigation of active and passive acquired immunity, nasal swabs and mouth swabs from animals which were selected for investigation of active acquired immunity and hematophagous insects from 20 farms were collected (four times during study)...

Faculty:
Универзитет у Београду, Факултет ветеринарске медицине
Date:
23-09-2019
Projects:
  • Improvement of production capacities of the carp (Cyprinus carpio L) using feeding and selective breeding programs (RS-31075)
  • Bacterial zoonoses-Development of molecular and immunological diagnostic methods and their standardization (RS-31088)
  • Ecological and viral investigation on the presents of emerging zoonoses in national parks in republic of Serbia (RS-37015)
Keywords:
aktivni imunski odgovor / active immune response / pasivni imunski odgovor / virus neutralizacioni test / test indirektne imunofluorescencije / ELISA test / nodularni dermatitis / serum / mleko / kolostrum / passive immune response / VNT / IFAT / ELISA / ND / serum / milk / colostrum
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_nardus_11901
URI
http://eteze.bg.ac.rs/application/showtheses?thesesId=7226
https://nardus.mpn.gov.rs/handle/123456789/11901
https://fedorabg.bg.ac.rs/fedora/get/o:20962/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=

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